2008 NISSAN TEANA Service Manual

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Page 2689 of 5121

NISSAN TEANA 2008 Service Manual B2636, B2637, B2638, B2639, B2654, B2655 MODE DOOR MOTOR
HAC-61
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3. Confirm that air discharge comes out according to th

Page 2690 of 5121

NISSAN TEANA 2008 Service Manual HAC-62
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B2636, B2637, B2638, B2639, B2654, B2655 MODE DOOR MOTOR
3.CHECK MODE DOOR MOTOR GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect mode d

Page 2691 of 5121

NISSAN TEANA 2008 Service Manual B263D B263E, B263F, B2656 INTAKE DOOR MOTOR
HAC-63
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B263D B263E, B263F, B2656 INTAKE DOOR MOTOR
DescriptionINFOID:000000

B263D B263E, B263F, B2656 INTAKE DOOR MOTOR
HAC-63
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B263D B263E, B263F, B2656 INTAKE DOOR MOTOR
DescriptionINFOID:0000000003846356
COMPONENT DESCRIPTION
Intake Door Motor
The intake door motor (1) is attached to the blower unit.
It rotates so that air is drawn from inlets set by the A/C auto amp.
Motor rotation is conveyed to a lever which activates the intake
door.
DTC LogicINFOID:0000000003846357
DTC DETECTION LOGIC
NOTE:
If DTC is displayed along with DTC U1000 or U1010, first diagnose the DTC U1000 or U1010. Refer to HAC-
42, "DTC Logic" or HAC-43, "DTC Logic".
DTC CONFIRMATION PROCEDURE
1.CHECK WITH SELF-DIAGNOSIS FUNCTION OF CONSULT-III
1. Using CONSULT-III, perform “SELF-DIAGNOSIS RESULTS” of HVAC.
2. Check if any DTC is displayed in the self-diagnosis results.
NOTE:
If DTC is displayed along with DTC U1000 or U1010, first diagnose the DTC U1000 or U1010. Refer to HAC-
42, "DTC Logic" or HAC-43, "DTC Logic".
Is DTC
“B263D”, “B263E”, “B263F” or “B2656” displayed?
YES >> Perform trouble diagnosis for the intake door motor. Refer to HAC-64, "Diagnosis Procedure".
NO >> GO TO 2.
2.FUNCTION INSPECTION
1. Press REC switch.
2. The REC switch indicator is turned ON. (REC position)
3. Listen for intake door position change (Slight change of blower sound can be heard.).
4. Press FRE switch.
5. The FRE switch indicator is turned ON. (FRE position)
6. Listen for intake door position change (Slight change of blower sound can be heard.).
Does it operate normally?
YES >> INSPECTION END
:Vehicle front
JPIIA0516ZZ
DTCItems
(CONSULT-III screen terms)Diagnostic item is detected when... Possible cause
B263D FRE DOOR FAILWhen the malfunctioning intake door posi-
tion is detected at FRE position
Intake door motor
A/C auto amp.
Harness and connector
(CAN communication line is open
or shorted)
(Intake door motor is open or
shorted) B263E 20P FRE DOOR FAILWhen the malfunctioning intake door posi-
tion is detected at 20%FRE position
B263F REC DOOR FAILWhen the malfunctioning intake door posi-
tion is detected at REC position
B2656 BTC FRE DOOR FAILWhen the malfunctioning intake door posi-
tion is detected

Page 2692 of 5121

NISSAN TEANA 2008 Service Manual HAC-64
< COMPONENT DIAGNOSIS >[WITHOUT 7 INCH DISPLAY]
B263D B263E, B263F, B2656 INTAKE DOOR MOTOR
NO >> Check intake door motor installation, and repair or replace the malfunctioning parts.
Diagnosis

Page 2693 of 5121

NISSAN TEANA 2008 Service Manual POWER SUPPLY AND GROUND CIRCUIT
HAC-65
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POWER SUPPLY AND GROUND CIRCUIT
A/C AUTO AMP.
A/C AUTO AMP. : Diagnosis Procedur

Page 2694 of 5121

NISSAN TEANA 2008 Service Manual HAC-66
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POWER SUPPLY AND GROUND CIRCUIT
Is the inspection result normal?
YES >> GO TO 2.
NO >> Check 10A fuse (No. 3, located in the fuse block). Refer t

Page 2695 of 5121

NISSAN TEANA 2008 Service Manual A/C AUTO AMP.
HAC-67
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A/C AUTO AMP.
DescriptionINFOID:0000000003940951
COMPONENT DESCRIPTION
A/C Auto Amp. (Air Conditio

A/C AUTO AMP.
HAC-67
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A/C AUTO AMP.
DescriptionINFOID:0000000003940951
COMPONENT DESCRIPTION
A/C Auto Amp. (Air Conditioner Automatic Amplifier)
The A/C auto amp. (1) has a built-in microcomputer that processes
information sent from various sensors needed for air conditioner
operation. The air mix door motors, the mode door motor, the intake
door motor, the blower motor and the compressor are then con-
trolled.
When the various switches and temperature control dial are oper-
ated, data is input to the A/C auto amp. from the A/C control.
Component Function CheckINFOID:0000000003940952
1.CHECK OPERATION
1. Press the AUTO switch, and then check that “AUTO” is shown on the display.
2. Operate the temperature control dial (driver side). Check that the fan speed or outlet changes. (The dis-
charge air temperature or fan speed varies depending on the ambient temperature, in-vehicle tempera-
ture, and temperature setting.)
Does it operate normally?
YES >> INSPECTION END
NO >> Perform trouble diagnosis for the A/C system. Refer to HAC-67, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000003940953
1.INSPECTION BY FAIL-SAFE FUNCTION
1. Turn the ignition switch ON.
2. After approximately 30 seconds, check that the air conditioner is operated by the fail-safe function (the
operation display of air conditioner is not performed). Refer to HAC-84, "
Fail-Safe".
Is the fail-safe function operated?
YES >> GO TO 3.
NO >> GO TO 2.
2.CHECK A/C AUTO AMP. POWER SUPPLY CIRCUIT AND GROUND
Check A/C auto amp. power supply circuit and ground circuit. Refer to HAC-65, "
A/C AUTO AMP. : Diagnosis
Procedure".
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair or replace parts according to the inspection results.
3.CHECK A/C CONTROL SIGNAL CIRCUIT
Check the A/C control signal circuit. Refer to HAC-74, "
Diagnosis Procedure".
Is the inspection result normal?
YES >> INSPECTION END
NO >> Repair or replace parts according to the inspection results.
JPIIA0894ZZ

Page 2696 of 5121

NISSAN TEANA 2008 Service Manual HAC-68
< COMPONENT DIAGNOSIS >[WITHOUT 7 INCH DISPLAY]
BLOWER MOTOR
BLOWER MOTOR
DescriptionINFOID:0000000003846359
COMPONENT DESCRIPTION
Brush-less Motor
The blower motor utilizes a brush-less motor

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